Camelia multiclassing depends on your mythic path. People going +2 of instictual warrior on here seems good, but you lose some AC from her bone/air armor if you use it.
If you are angel with merged spellbook, you would give her buckler +7 AC with magic vestment, shield (which seems a bug, but still), and that's pretty much unbeatable so rather keep her pure.
Hmm I never took bonus spirits that would give her that armor, that is not a bad idea. But I did take once Animal spirit and she got a nice Smilodon at high levels to mount. In TB mounted combat is bugged and you get a free pounce as a rider as the game spends a move action with your AC to move you to enemy and you then get your full attack. So it is a nice DPS boost for Camelia (and Smilodon deals decent damage on its own)
Seems intentional to me. Of course, in Tabletop you'd need 14 BAB and at least 2 feats to achieve this.
Still, its not equal to Mounted Charge Pounce in crpg - as then with Spirited Charge all your damage is doubled (quadrupled if you're also level 20 Cavalier). Plus you get many bonuses: +2/+4 AB, Mythic Charge extra damage, possibly free Combat Maneuvers if Cavalier, possibly adding mount Strength if Sword Cavalier, armor bonus, boots bonus, possibly weapon bonus and so on....
That is good if Spirited Charge was not buggy and worked when it should. My Mad dog barbarian mostly did damage because of pounce and mythic power attack, spirited charge rarely worked and when it did it was always piercing damage no matter what weapon you used and as a result was resisted by some enemies.
But in PnP it only works with Lances and piercing weapons, it does not work with any weapons. It is too good in WotR. Probably better to not abuse it unless you play on impossible difficulty or something.
I agree its strong. But I don't see anything in Pathfinder rules limiting it to piercing weapons:
"When mounted and using the charge action, you deal double damage with a melee weapon (or triple damage with a lance)."
So its simply even stronger with lances, not limited to them.
Also enemies with major Piercing resistance? Have not met them yet, I think. Incorporeal maybe, but they ignore 50% of all physical damage (unless you have Ghost Touch).
On the other hand, I guess using Pounce in general (and even more so Vulpine Pounce) with mounted charge is quite cheesy indeed....